请输入您要查询的字词:

 

单词 neutron
释义 neutron
A neutral hadron (see elementary particles) that is stable in the atomic nucleus but decays into a proton, an electron, and an antineutrino with a mean life of 12 minutes outside the nucleus. Its rest mass (symbol mn) is slightly greater than that of the proton, being 1.6749286(10) × 10-27 kg. Neutrons occur in all atomic nuclei except normal hydrogen. The neutron was first reported in 1932 by James Chadwick
随便看

 

物理辞典收录了3346条物理词条,基本涵盖了常用物理知识及物理英语单词词组的翻译及用法,是物理学习的有利工具。

 

Copyright © 2000-2023 Newdu.com.com All Rights Reserved
更新时间:2025/6/23 2:58:36